Takeoff safety speed Regulation
Takeoff safety speed means a referenced airspeed obtained after lift-off at which the required one-engine-inoperative climb performance can be achieved.
Also defined in 1 more source
Per 14 CFR part 1: “A referenced airspeed obtained after lift-off at which the required one-engine-inoperative climb performance can be achieved.”
Guidance: Pilot's Handbook of Aeronautical Knowledge, p. G-29